Newbie needing help for '06 fiesta 3dr

[esta]

Hi all. I'm Ryan & I just got possession of a '06 WP Fiesta 3dr hatch with
about 210 000kms on the clock (mainly freeway kms).
Looking for advice on where to go to get repairs done & also maybe sourcing mods like suspension and banded wheels etc. on a budget.
There's a few problems that i need help with and being a newbi to cars I'll try the best to explain so. . . .
. A/C needs re-gassing.
. When the car is started cold there is noise coming from what I think is the clutch cause it goes away when I push the clutch pedal in but starts up again when the pedal is out in neutral.
. 1st, 2nd & 5th gears sound straight cut (1st, 2nd whine on take off & especially 5th is real loud when selected).
. Occasionally there's strange knocking noises from the front wheels when doing low speed tight turns and/or braking.
I know the cv joints and front shocks were replaced last year & the water pump, timing belt early this year & still runs fine.

So should I get it fixed & sell it for a different car or keep it & add some mods cause even though I'm not a huge fan of its looks its not a bad little hatch & could look better.